<!DOCTYPE html>
<html class="reftest-wait">
  <head>
  </head>
  <body>
    <div id="host"></div>
    <script>
      var host, root;

      function run() {
        host = document.getElementById("host");
        root = host.createShadowRoot();
        root.innerHTML = 'a <content></content> c';
      }

      function tweak() {
        var span = document.createElement("span");
        span.innerHTML = "b";

        // Span should be distributed to insertion point between 'a' and 'c'.
        host.appendChild(span);

        document.documentElement.removeAttribute("class");
      }

      if (document.body.createShadowRoot) {
        run();
        window.addEventListener("MozReftestInvalidate", tweak, false);
      } else {
        document.documentElement.className = "";
      }
    </script>
  </body>
</html>
